# Explain briefly about longitudinal wave & Transverse wave?

 Longitudinal Wave Transverse Wave Longitudinal waves are those in which the particles of the medium oscillates parallel to the propagation of the wave. Transverse waves are those in which the particles of the medium oscillates perpendicular to the direction of the wave. Longitudinal wave always needs a medium to propagate. These are mechanical waves. Wave propagating along the length of a spring is a longitudinal wave. Sound wave is a longitudinal wave. Transverse wave that needs medium to propagate is a mechanical wave. Water waves (formation of ripples in a pond) are transverse waves. Electromagnetic waves (example: light) are also transverse waves (electric and magnetic field oscillates perpendicular to the propagation of the wave) but these waves don't need a medium to propagate.

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Longitudnal- these are waves in particles of mediam viberate to and fro (forward and backwards) in the direction of propagation. Ex. Sound waves Transverse- these are waves in particles of mediam viberate in a perpendicular direction of the propagation of wave. Ex. Light waves
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The main difference between longitudinal and transverse waves is that : longitudinal waves are formed by crest and trough, whereas transverse waves are formed by compression and rarefaction.
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transverse waves flow only in solids and liquid while longitudinal flow through all mediums making compression and rarefactions
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